Nat Traversal - Multitech MultiVOIP MVP210 User Manual

NAT Traversal

Setting the NAT Traversal parameters. NAT (Network Address Translation) parameters are applicable only when
the MultiVOIP is operating in SIP mode. STUN (Simple Traversal of UDP through NATs (Network Address
Translation)) is a protocol for assisting devices behind a NAT firewall or router with their packet routing. This is not
available on the –SS models.
Descriptions for NAT Traversal screen fields are presented in the table below.
Field Name
Enable (STUN)
Name/IP (Server)
Port (Server;
NAT/STUN)
Keep Alive (Timers;
NAT/STUN)
Multi-Tech Systems, Inc.
Figure 4-23: NAT Traversal
NAT Traversal Definitions
Values Description
Y/N Enables STUN client functionality in the MultiVOIP.
STUN (Simple Traversal of UDP through NATs (Network Address Translation))
is a protocol that allows a server to assist client gateways behind a NAT firewall
or router with their packet routing.
IP address of the STUN server.
n.n.n.n
The data port (TDM time slot) at which STUN info will be transmitted and
port;
default= received.
3478
60 – 3600 The interval at which the STUN client sends indicator ("Keep Alive") packets to
(seconds) the STUN server to determine whether or not the STUN server is available.
Chapter 4: Configuring your VOIP
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